EP 0779863 A1 19970625 - VISUALLY IDENTIFIABLE OPTICAL ELEMENT
Title (en)
VISUALLY IDENTIFIABLE OPTICAL ELEMENT
Title (de)
VISUELL IDENTIFIZIERBARES OPTISCHES ELEMENT
Title (fr)
ELEMENT OPTIQUE VISUELLEMENT IDENTIFIABLE
Publication
Application
Priority
- DE 9501193 W 19950831
- DE 4432062 A 19940909
Abstract (en)
[origin: WO9607547A1] A visually identifiable optical element, in particular a safety element for securities, such as bank notes, credit cards, identity cards or checks, or other objects that need to be safeguarded, has a substrate with a diffuse reflecting visible surface and a metallised layer applied on certain areas of the visible surface (12, 34) of the substrate (10, 28, 36). The surface of said metallised layer has a metallic brilliant appearance when observed from a certain angle. In order to improve such an optical element so that objects provided therewith are even better protected against forgery than is possible with known optical elements, two areas (14, 16, 30, 32, 40, 42) of the visible surface (12, 34) of the substrate have different reflectivities, in particular diffuse reflectivities for light. One part (18, 24, 26) or several parts (38) of each of the two substrate areas (14, 16, 30, 32, 40, 42) are metallised. Observed from directions outside a viewing range, the metallised parts have a reflectivity that is lower than or substantially equal to the reflectivity of the most reflective substrate area and higher than or substantially equal to the less reflective substrate area.
IPC 1-7
IPC 8 full level
B41M 3/14 (2006.01); B42D 15/10 (2006.01); B42D 25/00 (2014.01); G02B 5/02 (2006.01)
CPC (source: EP US)
B41M 3/148 (2013.01 - EP US); B42D 15/085 (2013.01 - US); B42D 25/00 (2014.10 - US); B42D 25/328 (2014.10 - EP); B42D 25/373 (2014.10 - EP); B44F 1/02 (2013.01 - EP); Y10S 428/913 (2013.01 - EP US)
Citation (search report)
See references of WO 9607547A1
Designated contracting state (EPC)
AT CH DE ES FR GB IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9607547 A1 19960314; AT E168075 T1 19980715; AU 3340495 A 19960327; AU 685318 B2 19980115; BR 9508904 A 19980113; CA 2199503 A1 19960314; CA 2199503 C 20060509; CN 1054574 C 20000719; CN 1157595 A 19970820; DE 4432062 C1 19951130; DE 59502776 D1 19980813; EP 0779863 A1 19970625; EP 0779863 B1 19980708; ES 2119463 T3 19981001; HK 1003429 A1 19981030; JP H10505022 A 19980519; RU 2136508 C1 19990910; TW 400284 B 20000801; US 6623042 B1 20030923
DOCDB simple family (application)
DE 9501193 W 19950831; AT 95929745 T 19950831; AU 3340495 A 19950831; BR 9508904 A 19950831; CA 2199503 A 19950831; CN 95194987 A 19950831; DE 4432062 A 19940909; DE 59502776 T 19950831; EP 95929745 A 19950831; ES 95929745 T 19950831; HK 98102496 A 19980324; JP 50911296 A 19950831; RU 97105828 A 19950831; TW 84110103 A 19950927; US 79352001 D 20010205